Cleanest Lakes in Morgan County, Illinois
Jacksonville Lake in Morgan County leads the rankings with a water quality grade of D and 1.8 ft of clarity. Below are the top 1 cleanest monitored lakes in Morgan County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Jacksonville Lake | Morgan | D | 1.8 ft | 48 µg/L | - |